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Doe cycle
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<blockquote data-quote="megalomaniac" data-source="post: 5506159" data-attributes="member: 2805"><p>Not certain about deer, but probably very similar to humans... </p><p></p><p>From the actual time of ovulation, the egg is only viable for 12 hours, and successful fertilization declines rapidly if sperm are not present 6h after ovulation. That being said, sperm can remain viable and capable of fertilization for up to 48 hours.</p><p></p><p>Noone has studied this in whitetails to the same level of detail as in humans, but I suspect it's the same.... does will stand and accept bucks just before onset of ovulation, to ensure viable sperm is present at the time of actual ovulation. So while the entire receptive estrus timeframe is 24-36 hours, the most critical part is the 6h immediately following actual ovulation. Which is also why does mated with multiple bucks just before ovulation have twin fawns from different fathers. There were sperm already present in the genital tract from those matings prior to ovulation.</p></blockquote><p></p>
[QUOTE="megalomaniac, post: 5506159, member: 2805"] Not certain about deer, but probably very similar to humans... From the actual time of ovulation, the egg is only viable for 12 hours, and successful fertilization declines rapidly if sperm are not present 6h after ovulation. That being said, sperm can remain viable and capable of fertilization for up to 48 hours. Noone has studied this in whitetails to the same level of detail as in humans, but I suspect it's the same.... does will stand and accept bucks just before onset of ovulation, to ensure viable sperm is present at the time of actual ovulation. So while the entire receptive estrus timeframe is 24-36 hours, the most critical part is the 6h immediately following actual ovulation. Which is also why does mated with multiple bucks just before ovulation have twin fawns from different fathers. There were sperm already present in the genital tract from those matings prior to ovulation. [/QUOTE]
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